A Temporal Topic Model for Noisy Mediums.
ADVANCES IN KNOWLEDGE DISCOVERY AND DATA MINING, PAKDD 2018, PT II(2018)
摘要
Social media and online news content are increasing rapidly. The goal of this work is to identify the topics associated with this content and understand the changing dynamics of these topics over time. We propose Topic Flow Model (TFM), a graph theoretic temporal topic model that identifies topics as they emerge, and tracks them through time as they persist, diminish, and re-emerge. TFM identifies topic words by capturing the changing relationship strength of words over time, and offers solutions for dealing with flood words, i.e., domain specific words that pollute topics. An extensive empirical analysis of TFM on Twitter data, newspaper articles, and synthetic data shows that the topic accuracy and SNR of meaningful topic words are better than the existing state.
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关键词
Temporal Topic Models, Word Flood, Domain-specific Words, Ground Truth Topics, Previous Time Window
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